What was found
NR 2 ENGINE OIL BYPASS LIGHT CAME ON DURING TAXI IN. QRH PROCEDURE FOLLOWED & ENGINE SHUTDOWN DURING TAXI. ACFT GROUNDED. UNABLE TO REMOVE SCAVENGE FILTER BOWL IT IS FROZEN IN PLACE. REMOVED SCAVENGE FILTER ASSY RE AMM 79-21-04-000-801-F00. INSPECTED AFB/TGB MCD. ACCOMPLISHED FIM 79-05, TASK 817, EEC BITE SHOWS MSG 79-31122 LAST 2 LEGS "OIL FILTER SIGNAL DISAGREE" FILTER BYPASSED. NR PN 1-2 SHOWS 2.5 OHM, PIN 2-3 SHOWS OPEN, CDU SHOWS S1CHB-CLOSED, S2CHB-OPEN, S1CHA=CLOSED, S2CHA-OPEN. RECOMMEND S125, REPLACED. INSTALLED SCAVENGE FILTER ASSY IAW MM 79-21-04. FILTER ELEMENT R & R 79-21-06. IDLE LEAK CK GOOD IAW 71-00-00 AND EEC BITE TEST PASS CH A & B. ACFT GOOD FOR SERVICE.